Timothy Potts - On-Line Defect Detection in Micro-Grids

Session 21: Process Control

On-Line Defect Detection in Micro-Grids
Thursday, February 15, 2018
2:05 PM - 2:25 PM

The dominant technology for replacement of ITO involves the deposition or printing of a grid pattern onto a film or glass substrate. Grid-based benefits include higher throughput, lower cost and improved functionality. Conventional inspection technologies often “subtract” the grid from the image and detect defects in the non-grid area. This means that critical defects in the grid can go undetected. Dark Field has developed special optics which allow the inspection system to optically ignore the grid. This means that the system detects ALL the defects whcther they lie on the grid or between the grid patterns. It also means that the inspection system does not have to “learn” the grid. Special Solid State Laser Reflection (SSLR) technology has been developed which has been proven to detect defects on glass and film in the presence of grids ranging from 5μm - 10μm thick. This paper will describe the technology and give application examples.

Speaker's Biography


BS, Engineering: Northeastern University

MS, Engineering: Northeastern University

MBA: University of Connecticut Professional Experience

Over thirty years experience in all phases of the capital equipment business; development, engineering, marketing, sales and international operations. Last twenty-five years have been dedicated to laser and camera inspection businesses. President of Dark Field Technologies, a high-resolution laser and camera inspection systems company, since 1997. Prior to Dark Field, President and CEO of Sira and Image Automation and Vice-President of Intec.

Hobbies: Golf, Motorcycling (Harley-Davidson)


Timothy Potts
Dark Field Technologies, Inc